Irish Blue Limestone has been used for centuries as a flooring material in old castles, churches, abbeys, etc. Continuous wear through the years can result in a distinctive look where softer fossils in the stone surface and the tile edges are slightly worn in. Because Irish Blue Limestone salvaged tiles have become a scarce commodity, the ADL technology has been developed to naturally ‘age’ the tile surface, using similar abrasive action. The result is a replication of old type paving, but produced with a limited and calibrated thickness, making it suitable for use in any new build.